A control method, device, vehicle and medium for hybrid vehicle

Abstract

The present invention relates to a control method, device, vehicle and medium for a hybrid vehicle, and belongs to the technical field of hybrid vehicle control. The present invention comprehensively considers the temperature of the electric power source of the hybrid vehicle and the ambient temperature to accurately determine the amount of electricity that needs to be reserved for the electric power source, thereby reserving the amount of electricity of the electric power source for different ambient temperatures / different electric power source temperatures, so that the user can use the pure electric mode to drive the vehicle for a longer period of time, and can also reserve enough electricity for the vehicle currently required.

Description

Technical Field

[0001] The present invention relates to the technical field of hybrid vehicle control, and in particular to a control method, device, vehicle and medium for a hybrid vehicle. Background Art

[0002] Hybrid vehicles combine the advantages of traditional fuel vehicles and electric vehicles. They can be driven by fuel or pure electric. The operation process of pure electric driving can be called the power consumption stage (hereinafter referred to as pure electric mode), and the operation process of fuel driving can be called the power maintenance stage, that is, no power is consumed in this stage (hereinafter referred to as hybrid mode).

[0003] When the hybrid vehicle is fully charged and the user selects the pure electric mode, the hybrid vehicle will be driven by pure electric power; with continuous use, the power of the hybrid vehicle will gradually decrease to a certain value. At this time, the hybrid vehicle will automatically enter the hybrid mode to reserve a certain amount of power to meet the power demand of the hybrid vehicle.

[0004] In practical applications, if too much power is reserved, users will only be able to use the pure electric mode for a short period of time; and if too little power is reserved, the power demand of the hybrid vehicle cannot be met. Therefore, how to accurately determine the power that needs to be reserved has become one of the urgent problems to be solved in the field of hybrid vehicle control. Summary of the invention

[0005] In view of the above problems, a control method, device, vehicle and medium for a hybrid vehicle are proposed to overcome the above problems or at least partially solve the above problems, including:

[0006] A control method for a hybrid vehicle, wherein the hybrid vehicle has a pure electric mode and a hybrid mode, the method comprising:

[0007] When the hybrid vehicle is running in a pure electric mode, obtaining a first temperature value of an electric power source of the hybrid vehicle and a second temperature value of a current environment;

[0008] Determine a first power value corresponding to the first temperature value and a second power value corresponding to the second temperature value from a first preset relationship; the first preset relationship is set for the hybrid vehicle and is a minimum remaining power value that the electric power source needs to have at different ambient temperatures / different electric power source temperatures;

[0009] The smallest power value between the first power value and the second power value is used as the exit power value of the pure electric mode, and when it is detected that the actual remaining power value of the electric power source is not higher than the exit power value, the hybrid vehicle is controlled to exit the pure electric mode and enable the hybrid mode.

[0010] Optionally, the method further comprises:

[0011] determining a target temperature interval to which the second temperature value belongs;

[0012] According to the target temperature range, determining a third temperature value from the first temperature value and the second temperature value;

[0013] Determine a third power value corresponding to the third temperature value from a second preset relationship; the second preset relationship is a correspondence relationship between a temperature value and a power value;

[0014] When determining the exit power value, the method further includes:

[0015] The larger one of the minimum power value and the third power value is used as the exit power value of the pure electric mode.

[0016] Optionally, determining a third temperature value from the first temperature value and the second temperature value according to the target temperature range includes:

[0017] When the target temperature interval is the first temperature interval, a smaller temperature value between the first temperature value and the second temperature value is used as the third temperature value;

[0018] When the target temperature interval is the second temperature interval, a larger temperature value between the first temperature value and the second temperature value is used as the third temperature value;

[0019] When the target temperature interval is a third temperature interval, taking the second temperature value as the third temperature value;

[0020] Among them, the first temperature range is less than the first preset temperature value, the second temperature range is greater than the second preset temperature value, and the third temperature range is between the first preset temperature value and the second preset temperature value; the first preset temperature value is less than the second preset temperature value.

[0021] Optionally, determining a third power value corresponding to the third temperature value from the second preset relationship includes:

[0022] Determining a fourth electrical quantity value corresponding to the third temperature value from the second preset relationship;

[0023] The third power value is determined according to the fourth power value and a preset offset value.

[0024] Optionally, the second preset relationship includes the following parts:

[0025] The temperature value is less than the third preset temperature value, and the power value corresponding to the temperature value in the second preset relationship increases as the temperature value decreases;

[0026] The temperature value is greater than a fourth preset temperature value, and the power value corresponding to the temperature value in the second preset relationship increases as the temperature value increases;

[0027] The temperature value is between the third preset temperature value and the fourth preset temperature value, and the power value corresponding to the temperature value in the second preset relationship is a unique preset fixed value;

[0028] Wherein, the third preset temperature value is lower than the fourth preset temperature value.

[0029] Optionally, the using a larger power value between the minimum power value and the third power value as the exit power value of the pure electric mode includes:

[0030] Determining whether the first power value is greater than the second power value;

[0031] When the first power value is greater than the second power value, the larger power value between the second power value and the third power value is used as the exit power value of the pure electric mode;

[0032] When the first power value is not greater than the second power value, a larger power value between the first power value and the third power value is used as an exit power value of the pure electric mode.

[0033] Optionally, the first preset relationship includes a first sub-preset relationship and a second sub-preset relationship;

[0034] The first sub-preset relationship is set for the hybrid vehicle and is a minimum remaining power value that the electric power source needs to have at different electric power source temperatures;

[0035] The second sub-preset relationship is set for the hybrid vehicle and is a minimum remaining power value that the electric power source needs to have under different ambient temperatures;

[0036] Among them, at the same temperature value, the corresponding power value in the second sub-preset relationship is smaller than the corresponding power value in the first sub-preset relationship.

[0037] Optionally, the hybrid vehicle is deployed with a first temperature sensor for the electric power source, and a second temperature sensor for the vehicle's surroundings;

[0038] The obtaining of a first temperature value of an electric power source of the hybrid vehicle and a second temperature value of a current environment includes:

[0039] A first temperature value measured for the electric power source is acquired from the first temperature sensor, and a second temperature value for a current environment is acquired from the second temperature sensor.

[0040] Optionally, the hybrid vehicle is equipped with a thermal power source, and controlling the hybrid vehicle to exit the pure electric mode and enable the hybrid mode includes:

[0041] The thermal power source is activated.

[0042] The present invention further provides a control device for a hybrid vehicle, wherein the hybrid vehicle has a pure electric mode and a hybrid mode, and the device comprises:

[0043] a temperature acquisition module, configured to acquire a first temperature value of an electric power source of the hybrid vehicle and a second temperature value of a current environment when the hybrid vehicle is running in a pure electric mode;

[0044] A first power determination module, used to determine a first power value corresponding to the first temperature value and a second power value corresponding to the second temperature value from a first preset relationship; the first preset relationship is set for the hybrid vehicle and is a minimum remaining power value that the electric power source needs to have at different ambient temperatures / different electric power source temperatures;

[0045] A control module is used to use the smallest power value between the first power value and the second power value as the exit power value of the pure electric mode, and when it is detected that the actual remaining power value of the electric power source is not higher than the exit power value, control the hybrid vehicle to exit the pure electric mode and enable the hybrid mode.

[0046] Optionally, the device further comprises:

[0047] A second power value determination module is used to determine a target temperature interval to which the second temperature value belongs; determine a third temperature value from the first temperature value and the second temperature value according to the target temperature interval; determine a third power value corresponding to the third temperature value from a second preset relationship; the second preset relationship is a correspondence relationship between a temperature value and a power value;

[0048] The control module is further configured to, when determining the exit power value, use the larger power value between the minimum power value and the third power value as the exit power value of the pure electric mode.

[0049] Optionally, the second power value determination module is used to, when the target temperature interval is the first temperature interval, use the smaller temperature value between the first temperature value and the second temperature value as the third temperature value; when the target temperature interval is the second temperature interval, use the larger temperature value between the first temperature value and the second temperature value as the third temperature value; when the target temperature interval is the third temperature interval, use the second temperature value as the third temperature value; wherein, the first temperature interval is less than the first preset temperature value, the second temperature interval is greater than the second preset temperature value, and the third temperature interval is between the first preset temperature value and the second preset temperature value; the first preset temperature value is less than the second preset temperature value.

[0050] Optionally, the second power value determination module is used to determine a fourth power value corresponding to the third temperature value from a second preset relationship; and determine the third power value according to the fourth power value and a preset offset value.

[0051] Optionally, the second preset relationship includes the following parts:

[0052] The temperature value is less than the third preset temperature value, and the power value corresponding to the temperature value in the second preset relationship increases as the temperature value decreases;

[0053] The temperature value is greater than a fourth preset temperature value, and the power value corresponding to the temperature value in the second preset relationship increases as the temperature value increases;

[0054] The temperature value is between the third preset temperature value and the fourth preset temperature value, and the power value corresponding to the temperature value in the second preset relationship is a unique preset fixed value;

[0055] Wherein, the third preset temperature value is lower than the fourth preset temperature value.

[0056] Optionally, the control module is used to determine whether the first power value is greater than the second power value; when the first power value is greater than the second power value, the larger power value between the second power value and the third power value is used as the exit power value of the pure electric mode; when the first power value is not greater than the second power value, the larger power value between the first power value and the third power value is used as the exit power value of the pure electric mode.

[0057] Optionally, the first preset relationship includes a first sub-preset relationship and a second sub-preset relationship;

[0058] The first sub-preset relationship is set for the hybrid vehicle and is a minimum remaining power value that the electric power source needs to have at different electric power source temperatures;

[0059] The second sub-preset relationship is set for the hybrid vehicle and is a minimum remaining power value that the electric power source needs to have under different ambient temperatures;

[0060] Among them, at the same temperature value, the corresponding power value in the second sub-preset relationship is smaller than the corresponding power value in the first sub-preset relationship.

[0061] Optionally, the hybrid vehicle is deployed with a first temperature sensor for the electric power source, and a second temperature sensor for the vehicle's surroundings;

[0062] The temperature acquisition module is used to acquire a first temperature value measured for the electric power source from the first temperature sensor, and to acquire a second temperature value for the current environment from the second temperature sensor.

[0063] Optionally, the control module is used to start the thermal power source.

[0064] The present invention also provides a vehicle, characterized in that it includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, and when the computer program is executed by the processor, the above control method for the hybrid vehicle is implemented.

[0065] The present invention also provides a computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the control method for a hybrid vehicle as described above is implemented.

[0066] Beneficial effects of the present invention:

[0067] In the present invention, when the hybrid vehicle is running in pure electric mode, a first temperature value for the electric power source of the hybrid vehicle and a second temperature value of the current environment are obtained; a first power value corresponding to the first temperature value and a second power value corresponding to the second temperature value are determined from a first preset relationship; the first preset relationship is set for the hybrid vehicle, and the minimum remaining power value required for the electric power source under different ambient temperatures / different electric power source temperatures; the smallest of the first power value and the second power value is used as the exit power value of the pure electric mode, and when it is detected that the actual remaining power value of the electric power source is not higher than the exit power value, the hybrid vehicle is controlled to exit the pure electric mode and enable the hybrid mode. By comprehensively considering the temperature of the electric power source of the hybrid vehicle and the ambient temperature to accurately determine the power required to be reserved for the electric power source, the power of the electric power source is reserved for different ambient temperatures / different electric power source temperatures, so that the user can use the pure electric mode to drive the vehicle for a longer time, and sufficient power currently required can be reserved for the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] Figure 1 is a flowchart of a control method for a hybrid vehicle according to an embodiment of the present invention;

[0069] Figure 2 is a flowchart of another control method for a hybrid vehicle according to an embodiment of the present invention;

[0070] Figure 3 is a flow chart of steps for determining a third temperature value according to an embodiment of the present invention;

[0071] Figure 4 is a schematic diagram of a second preset relationship in an embodiment of the present invention;

[0072] Figure 5 is a flowchart of steps for determining an exit power value according to an embodiment of the present invention;

[0073] Figure 6 It is a structural schematic diagram of a control device for a hybrid vehicle according to an embodiment of the present invention. DETAILED DESCRIPTION

[0074] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0075] In an embodiment of the present invention, an electric power source and a thermal power source may be deployed in a hybrid vehicle; when the vehicle is driven only by an electric power source, the vehicle is in a pure electric mode; when the vehicle is driven only by a thermal power source (or both an electric power source and a thermal power source are used at the same time), the vehicle is in a hybrid mode.

[0076] When a hybrid vehicle is operating in pure electric mode, it will continue to consume the power of the electric power source; when the power of the electric power source reaches a preset value, the hybrid vehicle can automatically switch from pure electric mode to hybrid mode to reserve a certain amount of power required by the hybrid vehicle in the electric power source, for example: for starting the engine of the thermal power source in a low temperature environment and maintaining the operation of the vehicle's air conditioning.

[0077] In order to accurately determine the amount of electricity that needs to be reserved, the embodiment of the present invention comprehensively considers the temperature of the electric power source and the ambient temperature of the hybrid vehicle to determine the amount of electricity that needs to be reserved, thereby reserving the amount of electricity of the electric power source for different ambient temperatures / different electric power source temperatures, which allows the user to use the pure electric mode to drive the vehicle for a longer period of time, and also reserves enough electricity for the vehicle that is currently needed.

[0078] Reference Figure 1 , shows a flow chart of a control method for a hybrid vehicle according to an embodiment of the present invention, which may include the following steps:

[0079] Step 101: When a hybrid vehicle is running in a pure electric mode, a first temperature value of an electric power source of the hybrid vehicle and a second temperature value of a current environment are obtained.

[0080] In practical applications, when the hybrid vehicle is running in a pure electric mode, a first temperature value collected for the electric power source of the hybrid vehicle and a second temperature value collected for the current environment can be obtained.

[0081] As an example, a hybrid vehicle may be equipped with a first temperature sensor for an electric power source and a second temperature sensor for the vehicle's surrounding environment; when collecting the first temperature value and the second temperature value, the following method may be used:

[0082] A first temperature value measured for the electric power source is obtained from the first temperature sensor, and a second temperature value for the current environment is obtained from the second temperature sensor.

[0083] In practical applications, a first temperature sensor for the electric power source and a second temperature sensor for the vehicle's surrounding environment can be pre-set in the hybrid vehicle; then, when the hybrid vehicle is running in pure electric mode, a first temperature value measured for the electric power source of the hybrid vehicle can be obtained from the first temperature sensor, and a second temperature value for the current environment around the vehicle can be obtained from the second temperature sensor.

[0084] As an example, the first temperature value can be obtained from the first temperature sensor in real time, and the second temperature value can be obtained from the second temperature sensor in real time; the first temperature value can also be obtained from the first temperature sensor at a preset time interval, and the second temperature value can be obtained from the second temperature sensor at a preset time interval. This embodiment of the present invention is not limited to this.

[0085] Step 102: Determine a first power value corresponding to a first temperature value and a second power value corresponding to a second temperature value from a first preset relationship; the first preset relationship is set for a hybrid vehicle and is the minimum remaining power value that the electric power source needs to have at different ambient temperatures / different electric power source temperatures.

[0086] After obtaining the first temperature value, a first power value corresponding to the first temperature value can be determined from a first preset relationship; the first power value can refer to the minimum remaining power value required by the electric power source when the temperature of the electric power source is the first temperature value.

[0087] At the same time, after obtaining the second temperature value, the second power value corresponding to the second temperature value can also be determined from the first preset relationship; the second power value can refer to the minimum remaining power value required by the electric power source when the current ambient temperature is the second temperature value.

[0088] Thus, based on the first preset relationship, the first temperature value and the second temperature value, the minimum remaining power required to be reserved by the electric power source when the hybrid vehicle is in different situations can be determined; the minimum remaining power can refer to the power demand to meet the hybrid vehicle in different situations.

[0089] In practical applications, the first preset relationship may be pre-set for hybrid vehicles; the first preset relationship may be the minimum remaining power value required by the electric power source corresponding to different environments, and the minimum remaining power value required by the electric power source corresponding to different electric power source temperatures.

[0090] Step 103: Use the smallest power value between the first power value and the second power value as the exit power value of the pure electric mode, and when it is detected that the actual remaining power value of the electric power source is not higher than the exit power value, control the hybrid vehicle to exit the pure electric mode and enable the hybrid mode.

[0091] After determining the first power value and the second power value, the first power value and the second power value may be compared, and the smallest power value of the first power value and the second power value may be used as the exit power value of the pure electric mode.

[0092] After the exit power value is determined, the actual remaining power value of the electric power source can be detected, and the actual remaining power value can be compared with the exit power value.

[0093] If the actual remaining power value is greater than the exit power value, the hybrid vehicle can continue to be driven in pure electric mode until a mode switching operation is received from the user, or when the actual remaining power value is not greater than the exit power value.

[0094] If the actual remaining power value is not greater than the exit power value, the hybrid vehicle can be controlled to exit the pure electric mode and enable the hybrid mode; thus, the hybrid vehicle will no longer be driven solely by an electric power source, but by a thermal power source (or a thermal power source and an electric power source); furthermore, a reserve is made in the electric power source for the hybrid vehicle to meet the hybrid vehicle's demand for power under the current circumstances (i.e., the current ambient temperature / the current electric power source temperature).

[0095] For example, when the current ambient temperature is high, less power can be reserved, so that the user can use the pure electric mode for a longer time. When the current ambient temperature is low, more power can be reserved, so that the hybrid vehicle can be started based on the electric power source at the next start.

[0096] As an example, a thermal power source may be deployed in a hybrid vehicle, and the thermal power source may be started when controlling the hybrid vehicle to exit the pure electric mode and start the hybrid mode; depending on actual conditions, the electric power source may also be turned off when exiting the pure electric mode and starting the hybrid mode, and the embodiments of the present invention do not limit this.

[0097] In an embodiment of the present invention, when a hybrid vehicle is running in pure electric mode, a first temperature value for the electric power source of the hybrid vehicle and a second temperature value of the current environment are obtained; a first power value corresponding to the first temperature value and a second power value corresponding to the second temperature value are determined from a first preset relationship; the first preset relationship is set for the hybrid vehicle, and the minimum remaining power value required for the electric power source under different ambient temperatures / different electric power source temperatures; the smallest of the first power value and the second power value is used as the exit power value of the pure electric mode, and when it is detected that the actual remaining power value of the electric power source is not higher than the exit power value, the hybrid vehicle is controlled to exit the pure electric mode and enable the hybrid mode. By comprehensively considering the temperature of the electric power source of the hybrid vehicle and the ambient temperature to accurately determine the power required to be reserved for the electric power source, the power of the electric power source is reserved for different ambient temperatures / different electric power source temperatures, so that the user can use the pure electric mode to drive the vehicle for a longer time, and can also reserve enough power for the vehicle currently required.

[0098] Reference Figure 2 , shows a flowchart of another control method for a hybrid vehicle according to an embodiment of the present invention, which may include the following steps:

[0099] Step 201: When the hybrid vehicle is running in a pure electric mode, a first temperature value of an electric power source of the hybrid vehicle and a second temperature value of the current environment are obtained.

[0100] In actual applications, a first temperature sensor for the electric power source and a second temperature sensor for the vehicle's surrounding environment can be pre-set; then, when the hybrid vehicle is running in pure electric mode, a first temperature value measured for the electric power source of the hybrid vehicle is obtained from the first temperature sensor, and a second temperature value for the current environment around the vehicle is obtained from the second temperature sensor.

[0101] Step 202: Determine a first power value corresponding to the first temperature value and a second power value corresponding to the second temperature value from a first preset relationship.

[0102] After the first temperature value is obtained, a first power value corresponding to the first temperature value can be determined from a first preset relationship. Meanwhile, after the second temperature value is obtained, a second power value corresponding to the second temperature value can also be determined from the first preset relationship.

[0103] As an example, the first preset relationship includes a first sub-preset relationship and a second sub-preset relationship; the first sub-preset relationship is set for a hybrid vehicle, and is the minimum remaining power value that the electric power source needs to have at different electric power source temperatures; the second sub-preset relationship is set for a hybrid vehicle, and is the minimum remaining power value that the electric power source needs to have at different ambient temperatures; wherein, at the same temperature value, the corresponding power value in the second sub-preset relationship is less than the corresponding power value in the first sub-preset relationship.

[0104] In practical applications, the first preset relationship may include a first sub-preset relationship set for the electric power source, and a second sub-preset relationship set for the environment.

[0105] The first sub-preset relationship is set for a hybrid vehicle, and is the minimum remaining power value that the electric power source needs to have in order to meet the hybrid vehicle's demand for power when the electric power source of the hybrid vehicle is at different temperatures.

[0106] The second sub-preset relationship is set for the hybrid vehicle. When the hybrid vehicle is in an environment with different temperatures, in order to meet the hybrid vehicle's demand for power, the electric power source needs to have a minimum remaining power value.

[0107] It should be noted that, at the same temperature value, the corresponding power value in the second sub-preset relationship can be set to be smaller than the corresponding power value in the first sub-preset relationship. For example, if the temperature of the electric power source and the environment are both 10°C, the power value set in the second sub-preset relationship can be smaller than the power value set in the first sub-preset relationship, and the embodiment of the present invention does not limit this.

[0108] Step 203: Determine the target temperature interval to which the second temperature value belongs.

[0109] After determining the second temperature value, the target temperature interval to which the second temperature value belongs may be determined, wherein the target temperature interval may be the first temperature interval, the second temperature interval, or the third temperature interval.

[0110] As an example, the first temperature interval is less than the first preset temperature value, the second temperature interval is greater than the second preset temperature value, and the third temperature interval is between the first preset temperature value and the second preset temperature value; the first preset temperature value is less than the second preset temperature value.

[0111] Specifically, the temperature value in the first temperature interval is less than the first preset temperature value, the temperature value in the second temperature interval is greater than the second preset temperature value, and the temperature value in the third temperature interval is between the first preset temperature value and the second preset temperature value.

[0112] For example, if the first preset temperature value is -10°C, the second preset temperature value is 35°C, and the second temperature value is 30°C, then the second temperature value is in the third temperature range.

[0113] Step 204: Determine a third temperature value from the first temperature value and the second temperature value according to the target temperature range.

[0114] After determining the target temperature interval to which the second temperature value belongs, a temperature value may be determined from the first temperature value and the second temperature value as the third temperature value according to the target temperature interval to which the second temperature value belongs.

[0115] In one embodiment of the present invention, the third temperature value may be determined by the following sub-steps:

[0116] Sub-step 11: when the target temperature interval is the first temperature interval, a smaller temperature value between the first temperature value and the second temperature value is used as the third temperature value.

[0117] If the target temperature interval to which the second temperature value belongs is the first temperature interval, a smaller temperature value between the first temperature value and the second temperature value may be used as the third temperature value.

[0118] For example, if the first temperature value is -11°C and the second temperature value is -12°C, the second temperature value may be used as the third temperature value.

[0119] Sub-step 12: when the target temperature interval is the second temperature interval, taking the larger temperature value between the first temperature value and the second temperature value as the third temperature value.

[0120] If the target temperature interval to which the second temperature value belongs is the second temperature interval, then the larger temperature value between the first temperature value and the second temperature value may be used as the third temperature value.

[0121] For example, if the first temperature value is 12° C. and the second temperature value is 11° C., the first temperature value may be used as the third temperature value.

[0122] Sub-step 13: when the target temperature interval is the third temperature interval, taking the second temperature value as the third temperature value.

[0123] If the target temperature interval to which the second temperature value belongs is the third temperature interval, the first temperature value may be directly used as the third temperature value.

[0124] like Figure 3 As shown, we can first obtain T amb (i.e. the second temperature value above) and T batt (ie the first temperature value above).

[0125] Then, based on T amb The target temperature range to determine the third temperature value:

[0126] T comb =min(T amb ,T batt ) T amb <T0;

[0127] T batt T1≥T amb ≥T0;

[0128] max(T amb ,T batt ) T amb >T1.

[0129] Wherein, T0 is the first preset temperature value mentioned above, and T1 is the second preset temperature value mentioned above.

[0130] Specifically, we can determine T amb Is it less than the calibration value T0? If the judgment result is yes, then T comb The calculation formula is T comb =min(T amb , T batt ); if the judgment result is no, proceed to the next step of judgment.

[0131] Judge T amb Is it greater than the calibration value T1? If the judgment result is yes, then T comb The calculation formula is T comb =max(T amb , T batt ); if the result is no, then T comb The calculation formula is T comb =T batt .

[0132] Based on the above calculation method, assuming T0 is -10℃ and T1 is 35℃; then when T amb When the temperature is below -10℃, use T amb and T batt The lower of is set to the third power value; when T amb When the temperature is higher than 35℃, use T amb and T batt The higher of is set to the third power value; when T amb In the range of (-10℃, 35℃), use T batt Set the third power level

[0133] Step 205: Determine a third power value corresponding to the third temperature value from a second preset relationship; the second preset relationship is a correspondence relationship between a temperature value and a power value.

[0134] After the third temperature value is determined, a power value that corresponds to the third temperature value may be determined from a preset second preset relationship and used as the third power value.

[0135] As an example, the second preset relationship may be a correspondence between a temperature value and a power value; specifically, the power value may be set as a function of the temperature value, and the functional relationship may be implemented by a one-dimensional calibration table; in the calibration table, the horizontal axis dimension may be a third temperature value, and the vertical axis dimension may be a third power value. The second preset relationship may be set according to actual needs, and the embodiment of the present invention does not limit this.

[0136] In an embodiment of the present invention, the second preset relationship may include the following three parts:

[0137] Part 1: The temperature value is less than the third preset temperature value, and the power value corresponding to the temperature value in the second preset relationship increases as the temperature value decreases.

[0138] Part 2: The temperature value is greater than the fourth preset temperature value, and the power value corresponding to the temperature value in the second preset relationship increases with the increase of the temperature value; wherein the third preset temperature value is less than the fourth preset temperature value.

[0139] Part three: the temperature value is between the third preset temperature value and the fourth preset temperature value, and the power value corresponding to the temperature value in the second preset relationship is a unique preset fixed value.

[0140] like Figure 4 , showing a schematic diagram of a second preset relationship of an embodiment of the present invention; wherein, in the first part, the temperature value is less than the third preset temperature value, and the power value in the first part increases with the decrease in temperature, thereby meeting the battery performance attenuation in the electric power source at low temperature and the increased power consumption caused by air conditioning heating.

[0141] In the second part, the temperature value is greater than the fourth preset temperature value, and the power value in the second part increases with the increase of temperature to meet the excessive increase in power consumption caused by the use of the air conditioner in the car under high temperature.

[0142] In the third part, the temperature value is between the third preset temperature value and the fourth preset temperature value, and the power value corresponding to the temperature value in the second preset relationship is a unique preset fixed value, which can be set according to actual conditions, and the embodiment of the present invention does not limit this.

[0143] As an example, the first preset temperature value and the third preset temperature value may be the same temperature value, and the second preset temperature value and the fourth preset temperature value may be the same temperature value, which is not limited in the embodiment of the present invention.

[0144] In one embodiment of the present invention, the third power value may be determined by the following sub-steps:

[0145] Sub-step 21: determining a fourth electrical quantity value corresponding to the third temperature value from the second preset relationship.

[0146] After the third temperature value is determined, it may be determined first to find a fourth temperature value corresponding to the third temperature value from the second preset relationship.

[0147] Sub-step 22: determining a third power value according to the fourth power value and a preset offset value.

[0148] Then, the third power value may be calculated according to the fourth power value and a preset offset value; specifically, the sum of the third power value and the preset offset value may be used as the third power value.

[0149] For example, if the fourth power value is B and the preset offset value is Offset, then (B+Offset) can be used as the third power value.

[0150] The preset offset value may be a fixed value or a value that varies with temperature; the preset offset value may be set in a range of 1%-3%, which is not limited in the embodiment of the present invention.

[0151] Step 206: Use the larger of the minimum power value and the third power value as the exit power value of the pure electric mode, and when it is detected that the actual remaining power value of the electric power source is not higher than the exit power value, control the hybrid vehicle to exit the pure electric mode and enable the hybrid mode.

[0152] In practical applications, the smaller of the first power value and the second power value is taken to allow the hybrid vehicle to obtain a longer pure electric range, and to control the electric power source to release more power when the temperature of the electric power source and the ambient temperature differ greatly (especially when the temperature of the electric power source is higher than the ambient temperature).

[0153] After taking the smaller value, the larger value is taken from the smallest power value and the third power value obtained above as the exit power value of the pure electric mode; thereby avoiding the problem that the vehicle may not start normally when it is started again after being left stationary in an extremely low temperature environment for a long time after running.

[0154] For example: Exit power value A = max(B+Offset, min(f(T amb ), f(T batt ))); where f(T amb ) is the second electric quantity value mentioned above, f(T batt ) is the first power value above.

[0155] It should be noted that both A and B cannot be set too low, otherwise the hybrid vehicle may not be able to start normally when it is restarted after being left stationary in an extremely low temperature environment for a long time.

[0156] After the exit power value is determined, the actual remaining power value of the electric power source can be detected, and the actual remaining power value can be compared with the exit power value.

[0157] If the actual remaining power value is greater than the exit power value, the hybrid vehicle can continue to be driven in pure electric mode until a mode switching operation is received from the user, or when the actual remaining power value is not greater than the exit power value.

[0158] If the actual remaining power value is not greater than the exit power value, the hybrid vehicle can be controlled to exit the pure electric mode and enable the hybrid mode; thus, the hybrid vehicle will no longer be driven solely by an electric power source, but by a thermal power source (or a thermal power source and an electric power source); furthermore, a reserve is made in the electric power source for the hybrid vehicle to meet the hybrid vehicle's demand for power under the current circumstances (i.e., the current ambient temperature / the current electric power source temperature).

[0159] In one embodiment of the present invention, when determining the exit power value, it can be achieved through the following sub-steps:

[0160] Sub-step 31: determine whether the first power value is greater than the second power value.

[0161] First, the relationship between the first power value and the second power value may be compared to determine whether the first power value is greater than the second power value.

[0162] Sub-step 32: when the first power value is greater than the second power value, the larger power value between the second power value and the third power value is used as the exit power value of the pure electric mode.

[0163] Then, if the first power value is greater than the second power value, the second power value and the third power value may be compared, and the larger power value may be used as the exit power value of the pure electric mode.

[0164] Sub-step 33: when the first power value is not greater than the second power value, the larger power value between the first power value and the third power value is used as the exit power value of the pure electric mode.

[0165] If the first power value is not greater than the second power value, the first power value and the third power value can be compared, and the larger power value can be used as the exit power value of the pure electric mode. The embodiment of the present invention does not limit this.

[0166] like Figure 5 , shows a flowchart of the steps of determining the exit power value according to an embodiment of the present invention:

[0167] S1: Get T amb and T batt .

[0168] S2: According to T amb and T batt , respectively obtain f(T amb ) and f(T batt ).

[0169] S3: SOC_base = (B + Offset) is obtained based on B and Offset. This value is used as the lower limit of the pure electric mode exit power value, that is, it is necessary to ensure that the final pure electric mode exit power value is not lower than SOC_base.

[0170] S4: Make conditional judgment, f(T amb ) <f(T batt ),

[0171] S5: If the judgment condition of S4 is met, set the exit power value of pure electric mode = max(f(T amb ), SOC_base);

[0172] S6: If the judgment condition of S4 is not met, set the exit power value of pure electric mode = max(f(T batt ), SOC_base).

[0173] The following assumes the use logic of the control method in three scenarios. Assume that the table mentioned above based on temperature lookup is as follows Figure 1As shown, and in the following examples, T amb and T batt The power values ​​obtained are all higher than SOC_base.

[0174] Table 1:

[0175] temperature -20℃ 0℃ 10℃ <![CDATA[SOC_T amb ]]> 25％ 20％ 16％ <![CDATA[SOC_T batt ]]> 30％ 24％ 16％

[0176] Scenario 1: Assume that the vehicle is stationary for a long time, then T amb and T batt It can be roughly considered to be the same, that is, Tamb≈Tbatt. Assuming that the temperature is -20℃ at this time, the value of setting the pure electric mode exit is 30%. This setting method can avoid the problem of limited vehicle starting performance when the vehicle is driving short distances without charging and encountering extremely low temperatures.

[0177] Scenario 2: Assume that the vehicle is driven out of the warm storage in winter. At this time, T batt It may be higher than T amb , assuming that T batt =10℃, and T amb = 0℃, the value of pure electric mode exit is set to 16%. In this scenario, T batt It can better reflect the true discharge capacity of the electric power source. This setting can extend the driving distance of the hybrid vehicle in pure electric mode at low temperatures.

[0178] Scenario 3: Assume that the vehicle is driven into a warm storage in winter. At this time, T amb Higher than T batt The setting method is similar to the above. At this time, the setting of the pure electric mode exit value is based on T batt This method can release the true discharge capacity of the battery.

[0179] When T amb When the temperature is extremely low (for example: -20℃), SOC_base acts as a safety factor to prevent the remaining power of the electric power source from being consumed to an extremely low level, which would affect the driving experience or even the next start.

[0180] By appropriately selecting different temperatures as the parameter selection basis for the control variables, refined control of energy management in different scenarios can be achieved, the scenario adaptability of hybrid vehicles can be improved, and the user's driving experience can be enhanced.

[0181] In an embodiment of the present invention, when a hybrid vehicle is running in pure electric mode, a first temperature value for the electric power source of the hybrid vehicle and a second temperature value of the current environment are obtained; a first power value corresponding to the first temperature value and a second power value corresponding to the second temperature value are determined from a first preset relationship; a target temperature range to which the second temperature value belongs is determined; a third temperature value is determined from the first temperature value and the second temperature value according to the target temperature range; a third power value corresponding to the third temperature value is determined from a second preset relationship; the second preset relationship is a correspondence between a temperature value and a power value; the smallest power value and the larger power value of the third power value are used as the exit power value of the pure electric mode, and when it is detected that the actual remaining power value of the electric power source is not higher than the exit power value, the hybrid vehicle is controlled to exit the pure electric mode and enable the hybrid mode. By setting the third power value, it is possible to avoid the problem that the hybrid vehicle may not start normally when it is started again due to insufficient power reserved in the electric power source when it is left stationary in an extremely low temperature environment for a long time. The hybrid vehicle has a stronger adaptability in the full temperature range; and the embodiment of the present invention not only ensures the performance of the vehicle in the full temperature range, but also extends the pure electric mode driving mileage at low temperatures, meeting the needs of the user group with convenient charging. At the same time, it also considers the protection of the battery and the difficulty of starting the whole vehicle at extremely low temperatures.

[0182] It should be noted that, for the sake of simplicity, the method embodiments are described as a series of action combinations, but those skilled in the art should be aware that the embodiments of the present invention are not limited by the order of the actions described, because according to the embodiments of the present invention, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present invention.

[0183] Reference Figure 6 , shows a schematic structural diagram of a control device for a hybrid vehicle according to an embodiment of the present invention, which may include the following modules:

[0184] The temperature acquisition module 601 is used to acquire a first temperature value of an electric power source of the hybrid vehicle and a second temperature value of the current environment when the hybrid vehicle is running in a pure electric mode;

[0185] The first power determination module 602 is used to determine a first power value corresponding to the first temperature value and a second power value corresponding to the second temperature value from a first preset relationship; the first preset relationship is set for a hybrid vehicle and is the minimum remaining power value that the electric power source needs to have at different ambient temperatures / different electric power source temperatures;

[0186] The control module 603 is used to use the smallest power value between the first power value and the second power value as the exit power value of the pure electric mode, and when it is detected that the actual remaining power value of the electric power source is not higher than the exit power value, control the hybrid vehicle to exit the pure electric mode and enable the hybrid mode.

[0187] In one embodiment of the present invention, the device further includes:

[0188] A second power value determination module is used to determine a target temperature interval to which the second temperature value belongs; determine a third temperature value from the first temperature value and the second temperature value according to the target temperature interval; determine a third power value corresponding to the third temperature value from a second preset relationship; the second preset relationship is a corresponding relationship between a temperature value and a power value;

[0189] The control module 603 is further configured to, when determining the exit power value, use the larger power value between the smallest power value and the third power value as the exit power value of the pure electric mode.

[0190] In one embodiment of the present invention, a second power value determination module is used to, when the target temperature interval is the first temperature interval, use the smaller temperature value between the first temperature value and the second temperature value as the third temperature value; when the target temperature interval is the second temperature interval, use the larger temperature value between the first temperature value and the second temperature value as the third temperature value; when the target temperature interval is the third temperature interval, use the second temperature value as the third temperature value; wherein the first temperature interval is less than the first preset temperature value, the second temperature interval is greater than the second preset temperature value, and the third temperature interval is between the first preset temperature value and the second preset temperature value; the first preset temperature value is less than the second preset temperature value.

[0191] In one embodiment of the present invention, the second power value determination module is used to determine a fourth power value corresponding to the third temperature value from the second preset relationship; and determine the third power value according to the fourth power value and the preset offset value.

[0192] In one embodiment of the present invention, the second preset relationship includes the following parts:

[0193] The temperature value is less than the third preset temperature value, and the power value corresponding to the temperature value in the second preset relationship increases as the temperature value decreases;

[0194] The temperature value is greater than a fourth preset temperature value, and the power value corresponding to the temperature value in the second preset relationship increases as the temperature value increases;

[0195] The temperature value is between the third preset temperature value and the fourth preset temperature value, and the power value corresponding to the temperature value in the second preset relationship is a unique preset fixed value;

[0196] The third preset temperature value is less than the fourth preset temperature value.

[0197] In one embodiment of the present invention, the control module 603 is used to determine whether the first power value is greater than the second power value; when the first power value is greater than the second power value, the larger power value between the second power value and the third power value is used as the exit power value of the pure electric mode; when the first power value is not greater than the second power value, the larger power value between the first power value and the third power value is used as the exit power value of the pure electric mode.

[0198] In one embodiment of the present invention, the first preset relationship includes a first sub-preset relationship and a second sub-preset relationship;

[0199] The first sub-preset relationship is set for the hybrid vehicle and is the minimum remaining power value that the electric power source needs to have at different electric power source temperatures;

[0200] The second sub-preset relationship is set for the hybrid vehicle and is the minimum remaining power value that the electric power source needs to have under different ambient temperatures;

[0201] Among them, at the same temperature value, the corresponding power value in the second sub-preset relationship is smaller than the corresponding power value in the first sub-preset relationship.

[0202] In one embodiment of the present invention, a hybrid vehicle is deployed with a first temperature sensor for the electric power source, and a second temperature sensor for the vehicle's surroundings;

[0203] The temperature acquisition module is used to acquire a first temperature value measured for the electric power source from a first temperature sensor, and to acquire a second temperature value for the current environment from a second temperature sensor.

[0204] In one embodiment of the present invention, the control module is used to start the thermal power source.

[0205] In an embodiment of the present invention, when a hybrid vehicle is running in pure electric mode, a first temperature value for the electric power source of the hybrid vehicle and a second temperature value of the current environment are obtained; a first power value corresponding to the first temperature value and a second power value corresponding to the second temperature value are determined from a first preset relationship; the first preset relationship is set for the hybrid vehicle, and the minimum remaining power value required for the electric power source under different ambient temperatures / different electric power source temperatures; the smallest of the first power value and the second power value is used as the exit power value of the pure electric mode, and when it is detected that the actual remaining power value of the electric power source is not higher than the exit power value, the hybrid vehicle is controlled to exit the pure electric mode and enable the hybrid mode. By comprehensively considering the temperature of the electric power source of the hybrid vehicle and the ambient temperature to accurately determine the power required to be reserved for the electric power source, the power of the electric power source is reserved for different ambient temperatures / different electric power source temperatures, so that the user can use the pure electric mode to drive the vehicle for a longer time, and can also reserve enough power for the vehicle currently required.

[0206] An embodiment of the present invention further provides a vehicle, which may include a processor, a memory, and a computer program stored in the memory and capable of running on the processor. When the computer program is executed by the processor, the above control method for a hybrid vehicle is implemented.

[0207] An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the control method for a hybrid vehicle as described above is implemented.

[0208] As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0209] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0210] Those skilled in the art will appreciate that the embodiments of the present invention may be provided as methods, devices, or computer program products. Therefore, the embodiments of the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0211] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0212] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0213] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device so that a series of operating steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable terminal device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0214] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0215] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0216] The control method, device, vehicle and medium for hybrid vehicles are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A control method for a hybrid vehicle, characterized in that: The hybrid vehicle is configured with a pure electric mode and a hybrid mode, and the method comprises: When the hybrid vehicle is running in a pure electric mode, obtaining a first temperature value of an electric power source of the hybrid vehicle and a second temperature value of a current environment; Determine a first power value corresponding to the first temperature value and a second power value corresponding to the second temperature value from a first preset relationship; the first preset relationship is set for the hybrid vehicle and is a minimum remaining power value that the electric power source needs to have at different ambient temperatures / different electric power source temperatures; The smallest power value between the first power value and the second power value is used as the exit power value of the pure electric mode, and when it is detected that the actual remaining power value of the electric power source is not higher than the exit power value, the hybrid vehicle is controlled to exit the pure electric mode and enable the hybrid mode.

2. The method according to claim 1, characterized in that The method further comprises: determining a target temperature interval to which the second temperature value belongs; According to the target temperature range, determining a third temperature value from the first temperature value and the second temperature value; Determine a third power value corresponding to the third temperature value from a second preset relationship; the second preset relationship is a correspondence relationship between a temperature value and a power value; When determining the exit power value, the method further includes: The larger one of the minimum power value and the third power value is used as the exit power value of the pure electric mode.

3. The method according to claim 2, characterized in that The step of determining a third temperature value from the first temperature value and the second temperature value according to the target temperature interval includes: When the target temperature interval is the first temperature interval, a smaller temperature value between the first temperature value and the second temperature value is used as the third temperature value; When the target temperature interval is the second temperature interval, a larger temperature value between the first temperature value and the second temperature value is used as the third temperature value; When the target temperature interval is a third temperature interval, taking the second temperature value as the third temperature value; Among them, the first temperature range is less than the first preset temperature value, the second temperature range is greater than the second preset temperature value, and the third temperature range is between the first preset temperature value and the second preset temperature value; the first preset temperature value is less than the second preset temperature value.

4. The method according to claim 2, characterized in that: The determining, from the second preset relationship, a third power value corresponding to the third temperature value comprises: Determining a fourth electrical quantity value corresponding to the third temperature value from the second preset relationship; The third power value is determined according to the fourth power value and a preset offset value.

5. The method according to claim 2, characterized in that: The second preset relationship includes the following parts: The temperature value is less than the third preset temperature value, and the power value corresponding to the temperature value in the second preset relationship increases as the temperature value decreases; The temperature value is greater than a fourth preset temperature value, and the power value corresponding to the temperature value in the second preset relationship increases as the temperature value increases; The temperature value is between the third preset temperature value and the fourth preset temperature value, and the power value corresponding to the temperature value in the second preset relationship is a unique preset fixed value; Wherein, the third preset temperature value is lower than the fourth preset temperature value.

6. The method according to claim 2, characterized in that The step of using the larger one of the minimum power value and the third power value as the exit power value of the pure electric mode includes: Determining whether the first power value is greater than the second power value; When the first power value is greater than the second power value, the larger power value between the second power value and the third power value is used as the exit power value of the pure electric mode; When the first power value is not greater than the second power value, a larger power value between the first power value and the third power value is used as an exit power value of the pure electric mode.

7. The method according to claim 1, characterized in that The first preset relationship includes a first sub-preset relationship and a second sub-preset relationship; The first sub-preset relationship is set for the hybrid vehicle and is a minimum remaining power value that the electric power source needs to have at different electric power source temperatures; The second sub-preset relationship is set for the hybrid vehicle and is a minimum remaining power value that the electric power source needs to have under different ambient temperatures; Among them, at the same temperature value, the corresponding power value in the second sub-preset relationship is smaller than the corresponding power value in the first sub-preset relationship.

8. The method according to claim 1, characterized in that The hybrid vehicle is equipped with a first temperature sensor for the electric power source and a second temperature sensor for the vehicle's surrounding environment; The obtaining of a first temperature value of an electric power source of the hybrid vehicle and a second temperature value of a current environment includes: A first temperature value measured for the electric power source is acquired from the first temperature sensor, and a second temperature value for a current environment is acquired from the second temperature sensor.

9. The method according to claim 1, characterized in that: The hybrid vehicle is equipped with a thermal power source, and controlling the hybrid vehicle to exit the pure electric mode and enable the hybrid mode includes: The thermal power source is activated.

10. A control device for a hybrid vehicle, characterized in that: The hybrid vehicle is equipped with a pure electric mode and a hybrid mode, and the device comprises: a temperature acquisition module, configured to acquire a first temperature value of an electric power source of the hybrid vehicle and a second temperature value of a current environment when the hybrid vehicle is running in a pure electric mode; A first power determination module, used to determine a first power value corresponding to the first temperature value and a second power value corresponding to the second temperature value from a first preset relationship; the first preset relationship is set for the hybrid vehicle and is a minimum remaining power value that the electric power source needs to have at different ambient temperatures / different electric power source temperatures; A control module is used to use the smallest power value between the first power value and the second power value as the exit power value of the pure electric mode, and when it is detected that the actual remaining power value of the electric power source is not higher than the exit power value, control the hybrid vehicle to exit the pure electric mode and enable the hybrid mode.

11. The device according to claim 10, characterized in that The device also includes: A second power value determination module is used to determine a target temperature interval to which the second temperature value belongs; determine a third temperature value from the first temperature value and the second temperature value according to the target temperature interval; determine a third power value corresponding to the third temperature value from a second preset relationship; the second preset relationship is a correspondence relationship between a temperature value and a power value; The control module is further configured to, when determining the exit power value, use the larger power value between the minimum power value and the third power value as the exit power value of the pure electric mode.

12. The device according to claim 11, characterized in that The second power value determination module is configured to use a smaller temperature value between the first temperature value and the second temperature value as the third temperature value when the target temperature interval is the first temperature interval; When the target temperature interval is the second temperature interval, a larger temperature value between the first temperature value and the second temperature value is used as the third temperature value; When the target temperature interval is the third temperature interval, the second temperature value is used as the third temperature value; wherein, the first temperature interval is less than the first preset temperature value, the second temperature interval is greater than the second preset temperature value, and the third temperature interval is between the first preset temperature value and the second preset temperature value; the first preset temperature value is less than the second preset temperature value.

13. The device according to claim 11, characterized in that The second power value determination module is used to determine a fourth power value corresponding to the third temperature value from a second preset relationship; and determine the third power value according to the fourth power value and a preset offset value.

14. The device according to claim 11, characterized in that The second preset relationship includes the following parts: The temperature value is less than the third preset temperature value, and the power value corresponding to the temperature value in the second preset relationship increases as the temperature value decreases; The temperature value is greater than a fourth preset temperature value, and the power value corresponding to the temperature value in the second preset relationship increases as the temperature value increases; The temperature value is between the third preset temperature value and the fourth preset temperature value, and the power value corresponding to the temperature value in the second preset relationship is a unique preset fixed value; Wherein, the third preset temperature value is lower than the fourth preset temperature value.

15. The device according to claim 11, characterized in that The control module is used to determine whether the first power value is greater than the second power value; when the first power value is greater than the second power value, the larger power value between the second power value and the third power value is used as the exit power value of the pure electric mode; when the first power value is not greater than the second power value, the larger power value between the first power value and the third power value is used as the exit power value of the pure electric mode.

16. The device according to claim 10, characterized in that The first preset relationship includes a first sub-preset relationship and a second sub-preset relationship; The first sub-preset relationship is set for the hybrid vehicle and is a minimum remaining power value that the electric power source needs to have at different electric power source temperatures; The second sub-preset relationship is set for the hybrid vehicle and is a minimum remaining power value that the electric power source needs to have under different ambient temperatures; Among them, at the same temperature value, the corresponding power value in the second sub-preset relationship is smaller than the corresponding power value in the first sub-preset relationship.

17. The device according to claim 10, characterized in that The hybrid vehicle is equipped with a first temperature sensor for the electric power source and a second temperature sensor for the vehicle's surrounding environment; The temperature acquisition module is used to acquire a first temperature value measured for the electric power source from the first temperature sensor, and to acquire a second temperature value for the current environment from the second temperature sensor.

18. The device according to claim 10, characterized in that The control module is used to start the thermal power source.

19. A vehicle, characterized in that: The invention comprises a processor, a memory and a computer program stored in the memory and capable of running on the processor, wherein when the computer program is executed by the processor, the control method for a hybrid vehicle as claimed in any one of claims 1 to 9 is implemented.

20. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the control method for a hybrid vehicle according to any one of claims 1 to 9 is implemented.

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